Lumbar support cushion



FIG. 1 is a top plan view of a lumbar support cushion showing our new design.

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a front perspective view thereof. 

The ornamental design for a lumbar support cushion, substantially as shown. 